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TVP5147 setinput error

zhang lei74405
Prodigy 250 points
Other Parts Discussed in Thread: TVP5147

Hi,all.

   Now we develop a dm6467 board based on TI EVM6467 sch.We use TVP5147 like EVM6467 method.

But when we run example/vpif_loopback_cmem.c binary execute file,like: ./vpif_loop_cmem -c 0 -m 1

return error information like belows:  tvp5147 lost lock and no input.I print status register 1,it returns 0x7e in most time and returns 0x6e in

little time.When returns 0x6e, another error information appears: frame error.

So anyone can tell me what's wrong with me?

  • 0
    TI__Prodigy 650 points

    I would first make sure the TVP is running fine and giving the expected output.

    So first check:

    clock - to see if it is giving 27Mhz

    power: powered up

    check the i2c connection with the host and see if all reads and writes are OK.

    make sure the register dump of TVP says it is the same as that of the one taken on the EVM.

    Make sure the mux and other pin settings are OK.

     

    ..

    And then run the app on ths host.

     

    Then make sureyou are getting interrupts - may be by putting a printk in the driver..

    ..Hope for the best!

    -Manju